In a follow up to Yen and JGBs Short-Term vs Long Term and a series of posts on Japan, I thought the Bloomberg article "Japan Pension Fund’s Bonds Too Many If Abe Succeeds, Mitani Says" was particularly interesting. It is difficult to find a total return series for the JGBS, so here is an example of how we might construct it in R with the JGB 9 year. Using the 9 year gets us about a decade more data than the 10 year. The calculation is not perfect but it gets us very close.
The Japanese Pension Fund (GPIF) has been spoiled by a very pleasant ride with their JGBs.